The unique properties of polaritons - such as stimulated scattering, parametric amplification, lasing, condensation and superfluidity - can provide a basis for a new generation of polariton emitters and semiconductor lasers. Until now, polariton lasing and nonlinearities have been demonstrated in optical experiments.
In the current issue of Nature, a team of Greek researchers from the Department of Physics at University of Crete, led by S. Tsintzos, report an experimental realisation of an electrically pumped semiconductor polariton light-emitting device, which emits directly from polariton states at a temperature of 235 K (-38 C).
Polariton electroluminescence data reveal characteristic anticrossing between exciton and cavity modes, a clear signature of the strong coupling regime.
Authors believe these findings represent a substantial step towards the realisation of ultra-efficient polaritonic devices with unprecedented characteristics.
